Machine for m aking shoe-nails



5 Sheets-Sheet 1.

(No Model.)

"A. PRESTAT.

MAGHINB FOR MAKING $50 mm.

Fgutented Sept. 1885' Attorney (No Model.) '5 Sh eets-Sheet 2-.

- A. PRESTAT.

MAUHINE FUR MAKING SHOE NAILS.

No. 326,240. Patented Sept. 15-, 1885 Il llhil.

E MW I mfi Np Model.)v

ET AVAILABIE-COW 5 sheets sheet 3.

A.?RESTAT.

MACHINE FOR MAKING $1101, NAILS.

' Patented Sept. 15,1885,

- 121mm}: M70166 fn (No Model.) 5 Sheets-Sheet 4.

v APB'ESTAT. MAGHlNE FOE MAKENG SHOE NAILS.

Patented Sept. 15, 1885;

No. 3262M).

5 Sheets--Sheet 5.

A. ZPRESEAT.

MACHINE FOR MAKING $1105 NAILS.

(N0 Mpdel.)

Pmen'tefi fiapize 15, 1885,

STATES l stens? MACHINE. FOR MAKlNG ESHGE NAllfi.

I om it may concern.-

can that I, AMnRoIsE PRESTAT, a

' citi' a or the llnitec States, residing at South on Station in thecounty of Plymouth "1 of lllllbailCllllSGllS, have invented and usefulimprovement; in Machines specification, reference being had to the ianving drawings. 4

invention relates to machines for makshoenails from a continuous wireblank; be special object of the invention is to .lLlL a machine whichwill make 9. dat- "ooin'ted nailthat is, one having its sides fiatwill.allow clinching of the nail in the manner well known.

. 's common to construct a machine which will me! e shoe-nails from acontinuous wire c. This idea is too old to be claimed by one at "hislate date. Recent inventions class have been confined more to indiv idnal i in provcznents, many ofwhich are based on the round orsquare-pointed nail. The l of point to a shoe nail precludes lity ol'clinching, which is neces- .n e hat lhe nail may retain its hold .LllBshoe. A fiat-pointed nail, however, :oes allow clinching, and this isthe main wlz shoe nmnnlheturcrs always preier this shame oi'nnil ontheir best'work. it I l i r. u.

' h yet of my invent on to construct a pointed nails cannot be employedto in kc the lint-pointed nails. Persons of an ii'ln ..iriiig-tni'n ofmind might reasonably ask why To make the matter clear I will explain.-ll1eold machine from which the roundpointed nai s were made usuallyemployed a pair oi'leve or tongs carrying-dies shaped to form eithera'sqnare or round point. At-

"tcr the wire blank had been headed and threaded it was fed between thedies on the levers, these dies catching the extreme end of the nail andcompressing the la ter to form the point the sur lus metal cut' ore. theblank escapin from the dies after action on the single nail had ceased,At the some time as the round point is formedlhoeh ails, of which thefollowing tcned or compressed to form a fiat point which part of LettersPatent No. 2526240, dated file-member 15, 1885.

nplica'rnrn filed November-18, 1894. (No model.)

small as to leave nothing by which the nail' could hold or cling;- tothe blank. Consequently, when a round or square point is formed on thenail it necessarily follows that the dies which make tl e point alsosever the nail from the blank; but this is not so when a flat point isformed. for the nail still holds'l'o the wire blank at the point afterthe dies have completed their action. I have therefore found itnecessary to employ additional means to effect this end when ailatpointed nail has been desired to be made. In the present case a pairof cutters are employed to sever the completed nail l'roni the blankafter the dies have flattened and shaped the point.

My invention, thereiore, broadly consists in the. combination, with thedies for flattening the sides 01' the nail, of a separate andindependent cuttcr or cutters lor severing thecompleted nail from theblank It further consists in the peculiar construction,eombinatiomamlarrangement of devices, all 'as hercinal'tmset forth, and particularlypointed out in the claims.

In the accompanying drawi 's, Figure l is a plan View of a shoenail-hulking machine embodyingmy improvements. Fig. 2 is-an elevation ofone side of the machine. Fig". 3 is an elevation oi the ognmsilc side..ll ig. dis a vertical leingilndinal section taken on the line n; m,Fig. i. Fig. 5 is a vertical longitudinal section taken on the line 91;, Fig. 1. Fig. 6 is a transverse section taken on the line z .2, l? jlfiig. 7 is a perspective view of one of the shoe nails made by themachine. Fig. 8 is a detail view of the upper and lower cutters. Fig. 9is a similar view ol the threading-dies. Fig. 10 is a vertical sectionalcletached view showing the threaded blank held between [hethreading-dies during the operation of the head-ibrming hammer. Fig. 11is a horizontal detached sectional view showingthe blank held betweenthe pressing-dies wh cl form the fiat sides or point. Fig. 12 is a 1erspective view of one of the pressing or no uting dies. Fig. 13 is t-transverse scction on the line a a, Fig. ll'i. 'i ig. 14 is a detachedvertical sectional view illustrating the action of the cutters. t

Like letters are used to indicate correspond in; parts in theseveralfigures.

- Referring to the accompanying drawings, A represents the baseorpedestal for the machine, which base is made hollow to form a receplotacle for the finish ed nails as they drop through the opening in thetop of the base after they are out off. The top of the base or pedestalinclined,and isarranged to supp rt the bed .plate-A of the machine,which bed-plate has I5 an opening registering with theopeningin the topof the base A.. 1

B designates the main or driving shaft," which extends transverselyacross the machine and is supported in suitable bearings. This shaft isprovided at one end, outside of the bearing, with the fixedband-pulleysB B and the fly-wheel B and at the other end with a cam, B,and a wrist or crank pin, 13, the latter being connected by a pitman,B5, to the arm B of the feed-slideC,as seen in Fig. 1.

The feed-slide G is provided with a bearing,

C", adjacent to the arm B and through this bearing passes a rod, 0, aset-screw, B, being employed to secure the rod in the bearing.Guide-bearings O" C are employed in which the rod 6 slides when themachine is inoperation. t The continuous wire blank D from which a thenails are formed is fed to t-hc machinc in the usualmanncr. It passesthrough ahole in the guide-post D, thence between a set of grooved feedand guide rolls, D" D, thence under thei'eeding blade D,which isadjustably, secured by a set-screw, D", in the arm D, so 40 that as theblade wears away itmay be fed downward. The arm D is pivoted inbearingsD rising from the feed-slide O. a spring bearing against the under sideof the arm to retain the blade to its work and yet allow said blade toyield upwardin feeding the blank for-,

ward. It will readily be understood that the reciprocating movement ofthe slideQthrough the connections B B B from the main shalt the bladeimpinges or bites against the wire to feed it a sufficient lengthforward to'allow for the next nail. From the *feeding-bladeD the wireblank D passes on through a guide -tube, 'E,'and between a pair of dies,1* E",

(see Figs. 5 and-9,) the meetinft ends of which are formed with athreaded re :ess into which the wire blank is fed. The upper die, 15',

moves with the transverse arm E, which is connected at one end to thelong pivoted lever E, Fig. 1, and at the outer end is pivoted inbearings E, provided on the bed-plate of the p ,the rear en'd of thebase-plate and confined machine. A spring, E, at the forward end of themachine bears against the under side of the free end of the pivotedlever E and 1 said lever up against the under side of a calm;

E located on the driving shaft B. Bythi'sqo construction it will be seenthat the arm Eh, will move vertically a slight distance when} themachine is operated, currying the (lieg along with it and-away from thelowerdie, The said lower die is stationary, and hoth 13 dies are heldadjustably in place by meana'otj. threaded rods. When thearm E' l'illthp d. dies are separated and the wire isfed foiflfl. between the dies asuflicient distance to-all .j, for the next nail. When the armEdescends, 8: the wire is pressed between thedies und th e, j threadsformed on that portion of the wired" that will constitute the shank ofthe nail whichisbeing made.

. 'In the arm Eiinnnediatel die .13, is Inounleda cutter, Fig. 10 whichworks vertically in guidesE", provided on the forward face of thepivoted arm E. The

in rear of the 83 cutter E is provided with a head havin an eye orperforation, G, at its upper-en Lin 9' which perforation is inserted oneend of hearm G,'the other end of whichjs secured by a setscrew, G, inthe rock slfafl: G', Fig. 5, the latter acting to project and operatetheupper cutter, E. The lower cutter, H,which 95.. assistsjn cutting thenail from the wire blank, is secured to an arm, H, provided on arockshaft, H, located in bearings Hbeneuth the bed-plate A. v 1

Upon one end of, the rock shaft H, I proto! vide a lever, H, which isrigidly secured tha -e to by a screw. (See Fig. 2.) The arms H of, thislever H project in opposite directiona a spring, I, secured 'to ablock,'I', bearing against the arm H the other arm, H, en (in! r05:

t'he lower arm, H, of an angular lever, l'ul-f f crumed to the side ofthe frame at its enda below and a short distance fromthernain or v jdriving-shaft B. The upperurm, I',' 0f the-f no lever l engages the camBonthdriving-- shaft, so that when the machineisoperated motion iscommunicated to the rockshaft H and the lower cutter, H at the sametime" that the upper cutter, E, ,is Operated by the mechanism which Iwillnow proceed to describe. I

E on the rock-shaft- G an arm or lever, J,

' extends rearwardly and is curved upwardly over a cam, J, on thedriving-shaft B, near the cam B, a coilspring, J, connecting the lever Jwith the bed-plateof the machine and holding the lever into engagementwith the cam J. It will thus be seen that thacam J operates the uppercutter, E, through the lever J and rock-shatt G simultaneously with thelower cutter, H. x Kdesignates the hammer, which consists of asliding'bar grooved in its vertical sides and working in ways b'ytheactiongof a spring-lever, K, preferably 'V'-shaped in form, the lowerend of the leverbei ina seat, K, prqjecting from the pe estu'l at thelower rear en'dthereof. A *guard, L,'extendl from the spring-levertoitslimits. A triplecnm M, ,on the drivingshaft B engages a shoulder orprojection, M, on the hammer K when the shaft B is revolved, and therebyforces the hammer back so as to compress the arms of the spring-lever K.As the shoulder M. on the hammer becomes disengaged from the triple-camM, the hammer is thrown forward by the spring -lcvcr K and strikes thepro jecting end of the wire blank. During the action of the hammer thewire blank is held between the dies E E, the meeting ends of which areformed countersunk in the manner well known. (See Fi 10.) Thus as thehammer strikes the projecting portion of the wire blank, it forces thisportion into the countersunk portion of the dies, thereby forming thehead for the completed nail. As soon as the head is formed onthe/advance end of the blank and the threads are formed on the sidesthereof, the wire 1) is then fed forward be tween compressing orflattening dies 0 i). one of which is shown in Fig. These dies arelocated transversely in the front ends of the tongs or levers N, whichconsist of two pivoted arms, I. fulcrunied below the rock-shaft G andprovided on their upper faces at their rear ends with stnds l P, thelatter being operated by the triple cam on the drivingshaft B. The tongsor levers bl work in a horizontal plane, so that the dies 0 0 close uponthe wire on each side with such force as to compress or flatten themetal. The outer 7 ends of the dies 0 0' pr( 'ect from the tongs orlevers N N a suiiicient distance to catch the wire blank.

The meeting outer ends or operating-races of the dies are formed withhorizontal transverse mitting-edges a. which are arranged parallel toeach other and are separated by a recess or depression, I, in which thesides of the wire blanks are received As the tongs or levers N Nalternately approach and rccede from each other, by the action themechanism before described, it will be observed that the cutting-edgesn. of each die carried by the tongs will co-operat-e in acting upon theopposite sides of the wire blank. Since the cutting-edges a are arrangedhorizontally and parallel to eachother, the recess or depression 1)between the said eutt-ingpdgcs will be oblong or rectangular in form.Thus as the wire blank is received in the recess or do 'pression, theshape thereof, when the two dies come together, will form the hat pointto the nail. It is preferred that the recess or depression I) be madedeeper at the inner end, so that the point where the flattening of thesides commences will be gradually rounded, and the shape ofthinail-shank thereby preserved. v

The operating faces of the dies 0 O are also provided with obliquedepressions or recesses d (1 above and below the cuttinv-edges n, whichrecesses 11 d diverge from the latter both up wardly and downwardly asthey reccde from the cutting-edges. it will be seen ti latter, beingreceived in the recess I), will be flattened,this action causing themetal displaced from the sides to spread upward and downward. Thissurplus metal pressed from the wire blank by the flattening 0f the sidesis cutby the horizontal parallel cutting edges (a a, leaving the mainportion of the wire blank within the recess or depression I). The piecesor chips cut from the wire blank by. the edge a work out through theoblique recesses 61, leaving the flat point of the nail proper withinthe horizontal recess b of the dies. It is well known that when metal isflattened it spreads. For this reason I provide the euttingedges a andoblique recesses d to out the portions of the nail-blank which spreadupward and downward by the action of the dies, and convey these chipsaway through the recesses d, so as not to clog or impede the furtheroperation of the machine. The nail is then left in a condition to cutfrom. the blank, as will be presently described; the diameter of theflat point of the nail being equal to the diameter of'thc shank or body.It will therefore be understood that it is essential that the dies beconstructed to cut the spreading portionsof the wire blank and leave theflat nail-point perfect in every respect.

As soon as the flat point is formedby the dies 0 O, the tongs moveoutward,causing the dies to'recede from the nail on the wire blank, thelatter standing mot-ionle'ss. The cutters E and H are then workedsimultaneously by means of the intermediate gearing actuated,respectively, by'the cam's J" B" on the main driving-shaft, and-thesecutters sever the coin plcted nail at the point from the wire blank; thenail dropping into the receptacle below; As the cutters work in rear ofthe dies, at portion of the wire blank will project from the exit end ofthe latter after the cutters have completed their work, this projectingportion of the wire blank allowing for the head to be formed when thehammer is operated. The operation may then be repeated as often asdesired.

The essential feature of the present invention resides in the pivotedtongs or levers carrying the dies to flatten or compress the sides ofthe nail-blank, and the cutters operating simultaneously to sever thenail from the wire blank as soon as the dies separate from the completednail. -By this arrangement I am enabled to manufacture a fiatpointcdnail, as hereinbefore stated.

Having described my invention I claim 1. The driving-shaft, incombination with the tongs or levers operated by the latter, and diescarried by the tongs to close around the wire on opposite sides withsuch force as to compress the metal and form the flattened point, as setforth.

2. [n a machine for making nails from a continuous wire, the (lies 0 0,having on their contiguous faces flat portions to compress the end ofthe blank on opposite sides, and parallol hmrizontal cutting-edges a forshearing rec away from the sides of the blank the surplusmetal projectedlaterally by the act of com-' p'r'ession, as set forth. 7

In a machine for making nails from a;

5 continuous wire blank, the dies O, which "ico operate to form thepoint of the nail and .shear oil the sides thereof, in combination withlhe'in'dependent cutting mechanism, ar-

ranged to sever the completed nail from the ."rb blank. as set forth.

4. The tongs or levers carrying' the dies 0 Q, which co-operate to formthepointof the nail, in'combination with the independent cuttingmechanism arrangcdto sever the nail I from the blank as soon as the diesrccede or separate/from the nail, as set forth.

, 5. The dies 00', which co-operate-tofcrm .the point of the nail, incombination with the.

upper andlower cutters working simultanezo ously to cut the nail fromthe blank-as soon as the dies have completed their action, as set 5springactuated lever H, the angular lever I",

mndthe cam B on the driving-shaft, as set.

forth.

9. The upper cutter, E, andlthe rock-shaft 0', connected thereto, incombination with the 40 lever J and the cam on the driving-shaft forworking the lever, as set forth.

rear of the dies, and

"10. The upper-cutter, E', in combination with the rock-shaft Gconnected-thereto and operated by the driving-shaftof the machine,

as set forth.

11. The lower cutterfH, in combinationwith the rock-shaft H, connectedthereto and operated bythe driving-shattof the machine, as set forth. r

12. The vertically-movable arm Ef, carryingthe upper 'die, incombination with the lower die, devices for feeding the wire forwardbetween the dies, the upper cutter working vertically in but independentof the arm E in the lowercutter, as set forth.-

13. The. mechanism for feeding the .wire,

the hammer. forlforming the head, and the inted" threadingdiesjncombination withthe dies carried by the tongs orlevers to orm theflat point on the nail, and the cutters operating between the tongs andthe threaded dies .to sever the nailvat the point from the wire blank;as set forth 14. The mechanism for feeding the wire, forming the head onthe advance end thereof,

and threading theshank, in combination with from the sides of the blankthe surplus metal projected laterally by the act vof compression,

and independent cutting mechanism for cutting or' severing the nailatthe end of the point from the wire blank, as set forth.

In testimony that I. claim: the foregoing as in'yown I have heretoaffixed'my signature in presence of two witnesm.,

AMBROIBE PREBTAT.

Witnesses: HERBERT O. Horxms, AQHILLE E. Pnns'racr.

the devices for mpressing or flattening the ,opposite sides oitheblankand shearing away

